CN209854072U

CN209854072U - Biomass pyrolysis carbon delivery device with gas supply function

Info

Publication number: CN209854072U
Application number: CN201920419966.7U
Authority: CN
Inventors: 杨选民; 邱凌; 朱琳; 邱洪臣
Original assignee: Northwest A&F University
Current assignee: Northwest A&F University
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2019-12-27
Anticipated expiration: 2029-03-29

Abstract

The utility model provides a take living beings pyrolysis carbon feeder of air feed function, belongs to agriculture and forestry discarded object utilization and living beings thermochemical conversion technical field, mainly comprises motor, puddler, stirring vane, venthole, bearing, fixed bolster, intake pipe, furnace gas outlet valve and fan. The utility model provides a living beings pyrolysis send charcoal device, it puts an installation puddler at pyrolytic reaction ware central point, installs tilting helical blade on the puddler, and during going out the charcoal, the motor drives the puddler and rotates, and stirring vane produces decurrent thrust to the biological charcoal to realize going out the purpose of charcoal smoothly. Simultaneously, this puddler cavity just has a plurality of ventholes, and the air lets in from the puddler bottom to the puddler forms a cylindrical burning layer as the centre of a circle, from inside to outside transmission radiant heat in pyrolysis reactor, thereby greatly improves pyrolysis efficiency. The utility model discloses can solve simultaneously that pyrolysis inefficiency easily blocks up two difficult problems with going out the charcoal, can show and improve living beings pyrolysis system charcoal production efficiency.

Description

Biomass pyrolysis carbon delivery device with gas supply function

Technical Field

The utility model belongs to a living beings pyrolysis device is applicable to living beings pyrolytic reaction, belongs to agriculture and forestry discarded object utilization and living beings thermochemical conversion technical field.

Background

Biomass pyrolysis refers to the process of heating biomass and then cracking the molecules to produce biochar, condensable liquid and combustible gas. The charcoal has high calorific value, is easy to store and transport, and is widely applied to the fields of energy, metallurgy, chemical industry, medicine, environmental protection and the like; the condensable liquid can separate two natural agricultural chemical substitutes of wood vinegar and wood tar, and is widely applied to modern ecological agriculture; the combustible gas mainly contains CO and H₂、CH₄And CO₂The components are clean renewable energy sources, and can be used for central gas supply, heating or power generation in rural areas and the like. Therefore, the biomass pyrolysis technology has excellent economic and social benefits.

There are two main problems in the technology of traditional living beings pyrolysis production biochar, firstly living beings pyrolysis inefficiency, in order to overcome this problem, can let in a small amount of air in the pyrolysis reactor to take place living beings limit oxygen pyrolytic reaction, realize the coproduction of charcoal, gas, liquid. However, in the current production, air is introduced from the outer wall of the pyrolysis reactor, so that only one layer of air-introduced region forms a combustion layer, the heat of the combustion layer is gradually conducted and radiated to other regions, most pyrolysis reactor bodies are relatively high, and the conduction efficiency of the heat of the combustion layer from the bottom layer to the upper layer is very low (see fig. 1). Secondly, the biochar is easy to block in the pyrolysis reactor, which causes carbon production difficulty and reduces the production efficiency.

In order to solve the above problems, people are always seeking a reasonable technical solution.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned not enough, provide a living beings pyrolysis carbon feeder of area gas supply function, put an installation puddler at pyrolysis reactor central point, install tilting helical blade on the puddler. When the charcoal is discharged, the motor drives the stirring rod to rotate, and the stirring blades generate downward thrust to the charcoal, so that the aim of smoothly discharging the charcoal is fulfilled. Simultaneously, this puddler cavity just has a plurality of ventholes, and the air lets in from the puddler bottom to the puddler forms a cylindrical burning layer as the centre of a circle, from inside to outside transmission radiant heat in pyrolysis reactor, thereby greatly improves pyrolysis efficiency. The utility model discloses can solve simultaneously that pyrolysis inefficiency easily blocks up two difficult problems with going out the charcoal, can show and improve living beings pyrolysis system charcoal production efficiency.

The technical principle of the utility model is as follows:

the utility model provides a take living beings pyrolysis carbon delivery device of air feed function, mainly comprises motor, puddler, stirring vane, venthole, bearing, fixed bolster, intake pipe, furnace gas outlet valve and fan. When the biomass is heated, a small amount of air enters the pyrolysis reactor from the air outlet hole of the stirring rod, the hot biomass is contacted with oxygen to generate oxygen-limited pyrolysis reaction, a combustion layer is formed at the center of the reactor, the outer layer is a pyrolysis layer, and the outermost layer is a drying layer (see figure 2); meanwhile, the burner in the hearth also supplies heat during combustion, and the heat is transferred from the outer wall of the reactor to the inside. Under the two heat supply modes, the biomass can be rapidly heated, so that the pyrolysis efficiency is improved. Can shrink and slight deformation after the charcoal generates, partial tar also can adsorb on the charcoal, causes the adhesion of charcoal to the jam can't rely on the dead weight to sink in the carbon storage hopper in the pyrolytic reaction ware. When the inclined stirring blades rotate, downward thrust can be generated on the biochar, so that the biochar is pushed out from the pyrolysis reactor.

The technical scheme of the utility model:

the utility model provides a take living beings pyrolysis carbon delivery device of air feed function, motor (1) are fixed at the top of storage hopper (4), and the pivot of motor couples with puddler (9) upper end, and the inside cavity of puddler and evenly distributed a plurality of ventholes (11) and a plurality of stirring vane (10), and its lower extreme is fixed in bearing (14). The bearing is installed on a fixed support (13), and the fixed support is connected with the inner wall of the pyrolysis reactor (8). The fan (18) is communicated with the interior of the stirring rod through an air inlet pipe (17), and the hearth (7) is communicated with the fan (18) through a hearth gas outlet valve (19).

The pyrolysis reactor (8) is located equipment center department, and its outside is flame retardant coating (6) and heat preservation (5) respectively, and the space between flame retardant coating (6) and pyrolysis reactor (8) is furnace (7), and annular combustor (12) are installed to the bottom of furnace (7), and annular combustor is connected with gas inlet (20), pyrolysis reactor (8) upper end links to each other with storage hopper (4), and the lower extreme links to each other with carbon storage hopper (15).

One side of the storage hopper (4) is communicated with the feed inlet (2) through a feed valve (3), and the combustible gas outlet (21) is fixed on the other side of the storage hopper (4).

And a carbon outlet valve (16) is arranged at the bottom of the carbon storage hopper (4).

The utility model discloses the beneficial effect who has:

the utility model discloses an let in the air in the puddler of sending the charcoal device for the device had both had carried out pyrolytic reaction ware's function with biological charcoal, had the air feed energy supply to pyrolytic reaction ware center department simultaneously, realized by interior and outer heat conduction mode, improved living beings pyrolysis efficiency.

Drawings

FIG. 1 is a heat transfer diagram of a conventional pyrolysis reactor.

FIG. 2 is a top view of the reactor heat transfer of the present invention.

Fig. 3 is a front view of the device of the present invention.

Fig. 4 is a view of the apparatus a-a of the present invention.

In the figure: 1-motor, 2-feed inlet, 3-feed valve, 4-storage hopper, 5-heat preservation layer, 6-fire-resistant layer, 7-hearth, 8-pyrolysis reactor, 9-stirring rod, 10-stirring blade, 11-air outlet, 12-annular burner, 13-fixed support, 14-bearing, 15-carbon storage hopper, 16-carbon outlet valve, 17-air inlet pipe, 18-fan, 19-hearth gas outlet valve, 20-gas inlet, 21-gas outlet.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The first embodiment is as follows:

as shown in fig. 3 and 4, the utility model provides a biomass pyrolysis carbon delivery device with air supply function. Before the biomass pyrolysis reaction, the carbon outlet valve (16) is firstly closed, the feeding valve (3) is opened, the biomass raw material enters the storage hopper (4) from the feeding hole (2) and then falls into the pyrolysis reactor (8), and the feeding valve (3) is closed after the biomass raw material is filled. Introducing fuel gas into a fuel gas inlet (20) and combusting the fuel gas at the annular combustor (12) so as to heat the outer wall of the pyrolysis reactor, wherein heat is transferred from the outside and the inside of the biomass raw material; open furnace gas outlet valve (19) and fan (18), hot-blast entering hollow cavity of puddler (9) behind the intake pipe (17) in the furnace overflows to pyrolytic reaction ware (8) from venthole (11), and biomass feedstock forms the combustion layer in the center department of reactor, from inside to outside heat transfer. In the process of pyrolysis reaction, flue gas generated by the biomass raw material is discharged from a combustible gas outlet (21), and can be used as clean fuel gas for combustion after being cooled, separated and purified. After the pyrolytic reaction, biomass raw material conversion generates the biochar, opens out charcoal valve (16), starter motor (1), and the motor drives puddler (9) and slowly rotates, and the stirring vane of slope promotes the biochar downwards, makes it smoothly carried out pyrolytic reaction ware.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.

Claims

1. A biomass pyrolysis carbon delivery device with a gas supply function is characterized by mainly comprising a motor (1), a feed inlet (2), a feed valve (3), a storage hopper (4), a heat preservation layer (5), a fire-resistant layer (6), a hearth (7), a pyrolysis reactor (8), a stirring rod (9), stirring blades (10), a gas outlet hole (11), an annular combustor (12), a fixed support (13), a bearing (14), a carbon storage hopper (15), a carbon outlet valve (16), an air inlet pipe (17), a fan (18), a hearth gas outlet valve (19), a gas inlet (20) and a combustible gas outlet (21), wherein the pyrolysis reactor (8) is positioned at the center of the device, the fire-resistant layer (6) and the heat preservation layer (5) are respectively arranged at the outer side of the pyrolysis reactor (8), the hearth (7) is arranged in a space between the fire-resistant layer (6) and the pyrolysis reactor (8), and the annular combustor (12) is arranged at the bottom of the, annular combustor is connected with gas inlet (20), pyrolysis reactor (8) upper end links to each other with storage hopper (4), and the lower extreme links to each other with carbon storage hopper (15), and carbon valve (16) are installed to carbon storage hopper (15) bottom, and storage hopper (4) one side is linked together with feed inlet (2) through feed valve (3), and combustible gas export (21) are installed to the opposite side, motor (1) are installed at storage hopper (4) top, and the pivot and puddler (9) upper end hookup of motor (1), puddler (9) lower extreme is fixed in bearing (14), and bearing (14) are installed on fixed bolster (13), fan (18) are through intake pipe (17) and puddler (9) inside intercommunication, and furnace (7) and fan (18) intercommunication are exported to furnace gas outlet valve (19).

2. The biomass pyrolysis carbon delivery device with the gas supply function of claim 1, which is characterized in that: and an inclined stirring blade (10) is arranged on the stirring rod (9).

3. The biomass pyrolysis carbon delivery device with the gas supply function of claim 1, which is characterized in that: the stirring rod (9) is hollow and is provided with a plurality of air outlet holes (11).